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Ignitions and Electrical› Computers, Chips, Modules and Programmers

Holley

ECU & Harness Kit - GM TPI/Holley Stealth Ram

$2,936.95 $2,609.95 Save $327.00

SKU: H00E 550-601

In Stock
In Stock
Ships by Jun 8
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Holley 550-601 is an HP EFI ECU and harness kit designed for simple plug-and-play installation with GM TPI and Holley Stealth Ram applications. It features an industry-leading self-tuning fuel strategy and uses sealed automotive and marine-grade connectors.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandHolley
Part NumberH00E 550-601
Weight9.1 lb

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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